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**What we already learned in previous class**

**Linear equation in two variable**

**Write each of the following equation in the form `ax+by+c=0` and indicate the value of `a;b and c` in each case**

**The cost a pen is Rs 5 less than half of the cost of book. Write this statement as a linear equation in two variables.**

**Solution of Equation with two variable**

**Write four solution of the equation `pi x + y =9`**

**If `x = 2k-1` and `y=k` is a solution the equation `3x-5y-7=0`; find the value of k.**

**Method to draw a graph of linear equation in two variables.**

**Draw graph of the equation ` y = x+5`**

**Equation of line parallel to X-axis and Y-axis**